Preparation of highly reactive polyisobutenes

Details Preparation of highly reactive polyisobutenes Preparation of highly reactive polyisobutenes

1993-08-13

1995-04-18

Teskin, Fred

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526 64, 526210, 526212, 526290, 5263487, C08F 414, C08F 1010

Patent

active

054080185

ABSTRACT:
A process for preparing highly reactive polyisobutenes with a content of terminal vinylidene groups of more than 80 mol % and an average molecular weight of 500-5000 Dalton by the cationic polymerization of isobutene or isobutene-containing hydrocarbon feeds in liquid phase with the aid of boron trifluoride as catalyst and at from 0.degree. C. to -60.degree. C., comprises polymerizing in the presence of secondary alcohols with 3-20 carbon atoms and/or ethers with 2-20 carbon atoms.

REFERENCES:
patent: 2099090 (1937-11-01), Webb
patent: 2379656 (1945-07-01), Ruthruff
patent: 4219691 (1980-08-01), Mandai et al.
patent: 4225739 (1980-09-01), Nipe et al.
patent: 5191044 (1993-03-01), Rath et al.
patent: 5191140 (1993-03-01), Akatsu et al.
English language translation of German Patent No. 704,038, published Mar. 21, 1941.

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